Across
- 3. The 23.5-degree angle of Earth's axis that is primary cause for changing seasons.
- 6. The common center of mass around which two or more celestial bodies orbit.
- 8. An imaginary line passing through the North and South poles around which Earth spins.
- 10. The movement of one object around another in space, taking one year for Earth.
Down
- 1. A measure of how much an orbital path deviates from a perfect circle.
- 2. The fundamental force of attraction that pulls objects toward the center of a mass.
- 4. The spinning of a celestial body on its own internal axis, causing day and night.
- 5. The curved path followed by a celestial object around a star, planet, or moon.
- 7. The long-term average of weather patterns in a specific region over a long period.
- 9. Periods of the year distinguished by unique weather conditions caused by Earth's tilt.